I have to go with Jesus on this one. Part of his package for his followers:
The forgiveness of all one's sins
The chance to know the perfect love of one's creator
The promise of provision in this life
The promise to spend eternity in paradise.
Here's what I don't want this thread to be about: I don't want it to be about trying to prove which "diety" is real or isn't real. Let's assume for the sake of argument that they're all real and that we're simply shopping for the best of the bunch.
I'd say probably the non-deity Buddha's teachings, or maybe Krishna in second place. Perhaps Stoic conceptions of the Logos as well. No religions or philosophies seem to offer anything that really catches my eye, but some seem to be a lot more intriguing than others.
I tend to view Christianity and some other Abrahamic varieties of religions as kind of like the quick diet approach. That is, they don't seem to prescribe rigorous ways of building true virtue and character through rational means, but instead propose concepts that I view as fairly empty (like promises of eternal paradise, given rather than earned, and a focus on trivial things that don't impact virtue while failing to emphasize some of the more fundamental issues of virtue), along with odd threats and a description of a thoroughly wrathful deity rather than one I'd ever view as loving. There exist claims that people are all wretched and in need of some external source of salvation, claims requesting submission or worship, etc. It's just not a personality that I find attractive or worth being on the good side of, let alone the bad side of.
Some of the Dharmic or Stoic concepts, however, seem to offer a lot more. In contrast to being like a quick diet, I view some of them as truly nutritious eating along with the right kinds and quantities of exercise; no shortcuts. Processes for systematically reducing and eliminating weaknesses, focuses on self-reliance and solving of real-world problems, insights into how to observe rather than judge to overcome suffering, a much broader and cyclical universe or multiverse compared to the ones typically described in Abrahamic contexts, specific meditations about focusing on feeling loving-kindness towards all sentient beings rather than just the general commandment to do so, cyclical universalism that eventually leads to transcendent permanent bliss for each being, etc. I view these religions or philosophies as having more to offer, and as far as deities go, Buddhism and Stoicism aren't centered around deities but I'd say the Bhagavad Gita in some ways describes how I'd imagine a god to be if one existed (Krishna). I don't get that sense at all when reading Abrahamic texts.